Heat dissipation apparatus

ABSTRACT

A heat dissipation apparatus may include a heat dissipation plate, which is made of metal materials, and has a first end and a second end thereon. A plurality of slots formed on the heat dissipation plate are located between the first end and the second end, and a plurality of fin units are located between the two ends of the slots. A serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof, and the fin unit protrudes from the heat dissipation plate. In one embodiment, the heat dissipation plate is circular, and the first end is located on a middle portion thereof, while the second end is located on an edge portions thereof, so the fin units are radially surrounded thereon.

FIELD OF THE INVENTION

The present invention relates to a heat dissipation apparatus, and moreparticularly to a heat dissipation apparatus with fin units to enhanceheat dissipation efficiency and lower the production cost.

BACK GROUND OF THE INVENTION

Current heat dissipation plate (20) (as shown in FIG. 12) is made ofmetal material and a plurality of fin units (21) thereon are formed bytrimming and the fin units (21) are pulled out from one side of the heatdissipation plate (20) during the manufacturing process, so the finunits protrude the fin from the heat dissipation plate (20) to increasethe surface area of the heat dissipation plate (20).

However, the conventional heat dissipation plate (20) is disadvantageousbecause: during the manufacturing process, joint sections between thefin unit (21) and the heat dissipation plate (20) may be too thin andeasy to break during the manufacturing process, thus the defective rateof the product is rising. Also, the length of the fin units (21) and thesurface area of the heat dissipation plate (20) are limited so heatdissipation efficiency cannot be improved. Therefore, there remains aneed for a new and improved heat dissipation structure to overcome theproblems illustrated above.

SUMMARY OF THE INVENTION

The present invention provides an enhanced heat dissipation structure,which comprises a heat dissipation plate, which is made of metalmaterials and has a first end and a second end thereon. A plurality ofslots formed on the heat dissipation plate are located between the firstend and the second end, and a plurality of fin units are located betweenthe two ends of the slots. A serrated surface is formed transversely onat least one side of the fin unit for enhancing the ductility thereof.In addition, the fin unit protrudes from the heat dissipation plate.

In one embodiment, the heat dissipation plate is circular and the firstends are located on middle portions thereof, while the second ends arelocated on edge portions thereof, so the fin units are radiallysurrounded thereon.

In another embodiment, the fin unit is shaped into a form of a hollowtriangle.

In still another embodiment, the serrated surface on the fin unit istriangle.

In yet another embodiment, the lower portion of serrated surface isperpendicular to the surface of the heat dissipation plate.

In a further embodiment, the serrated surface on the fin unit iscomposed of semi-circular shapes.

In still a further embodiment, an upper portion and a lower portion ofthe serrated surface are aligned, so the thickness of the fin unit isuniform.

In yet a further embodiment, the upper portion and the lower portion ofthe serrated surface are misaligned, so the thickness of the fin unit isnot uniform.

In a particular embodiment, a triangle-shaped space is formed betweenthe two nearby fin units on the second end and makes the fin units aredivided to form a Y-shaped unit.

Comparing with conventional heat dissipation apparatus, the presentinvention is advantageous because the serrated surface is formedtransversely on the fin unit for enhancing the surface area thereof, andthe fin unit protrudes from the heat dissipation plate. The design ofthe serrated surface disperses the stress on the two ends of the heatdissipation plate into the fin unit and enables the fin unit to stretcheasily for increasing the length of the fin unit and preventing the finunit from breaking during the manufacturing process. The heatdissipation plate and the fin units are formed integrally, and thedesign of the serrated surface lower the production cost and enhance theheat dissipation efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional view of the heat dissipation apparatus ofthe present invention.

FIG. 2 is a sectional view of the heat dissipation apparatus of thepresent invention.

FIG. 3 is another three-dimensional view of the heat dissipationapparatus of the present invention when in use.

FIG. 4 is a schematic view of the manufacturing process of the heatdissipation apparatus in the present invention.

FIG. 5 is another schematic view of the manufacturing process of theheat dissipation apparatus in the present invention.

FIG. 6 is a schematic view of the heat dissipation apparatus of thepresent invention with the rectangle serrated surface.

FIG. 7 is a schematic view of the heat dissipation apparatus of thepresent invention with the semi-circular serrated surface.

FIG. 8 is a three-dimensional view of another embodiment of the heatdissipation apparatus of the present invention.

FIG. 9 is still another three-dimensional view of the heat dissipationapparatus of the present invention when in use.

FIG. 10 is a three-dimensional view of a further embodiment of the heatdissipation apparatus in the present invention.

FIG. 11 is a further three-dimensional view of the heat dissipationapparatus in the present invention.

FIG. 12 shows a prior art.

DETAILED DESCRIPTION OF THE INVENTION

The detailed description set forth below is intended as a description ofthe presently exemplary device provided in accordance with aspects ofthe present invention and is not intended to represent the only forms inwhich the present invention may be prepared or utilized. It is to beunderstood, rather, that the same or equivalent functions and componentsmay be accomplished by different embodiments that are also intended tobe encompassed within the spirit and scope of the invention.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood to one of ordinary skill inthe art to which this invention belongs. Although any methods, devicesand materials similar or equivalent to those described can be used inthe practice or testing of the invention, the exemplary methods, devicesand materials are now described.

All publications mentioned are incorporated by reference for the purposeof describing and disclosing, for example, the designs and methodologiesthat are described in the publications that might be used in connectionwith the presently described invention. The publications listed ordiscussed above, below and throughout the text are provided solely fortheir disclosure prior to the filing date of the present application.Nothing herein is to be construed as an admission that the inventors arenot entitled to antedate such disclosure by virtue of prior invention.

In order to further understand the goal, characteristics and effect ofthe present invention, a number of embodiments along with the drawingsare illustrated as following:

Referring to FIGS. 1 and 2, the present invention provides an enhancedheat dissipation structure, which comprises a heat dissipation plate(10), which is made of metal materials as one unit and has a first end(11) and a second end (12) thereon. A plurality of slots (13) formed onthe heat dissipation plate (10) are located between the first end (11)and the second end (12), and a plurality of fin units (14) are locatedbetween the two ends of the slots (13). The heat dissipation plate (10)is circular and the first ends (11) are located on middle portionsthereof, while the second ends (12) are located on edge portionsthereof, so the fin units (14) are radially surrounded thereon. Aserrated surface (141) is formed transversely on at least one side ofthe fin unit (14) for enhancing the ductility thereof, and an embodimentof a one-sided serrated surface fin unit (14) is shown in FIG. 9. Inaddition, the fin units (14) protrude from the heat dissipation plate(10) and are shaped into a form of a hollow triangle, so the surfacearea of the heat dissipation plate (10) is increased significantly bythe disposition of the fin unit (14) and the design of the serratedsurface (141) to enhance the heat dissipation efficiency. In oneembodiment, backside of the heat dissipation plate (10) can be attachedto the surface of LED device (15) to achieve the effects of heatdissipation and cost reduction.

Referring to FIGS. 1,2 and 4, the heat dissipation plate (10) iscircular and the slots (13) formed thereon are located between the firstend (11) and the second end (12), and the length of the slots (13)determines the arrangement, length, and width of the fin units (14). Thefin units (14) connecting the two ends of the slots (13) are notrestricted to particular forms, shapes or arrangements. As shown inFIG.3, for example, the fin units (14) can be secured closed to thefirst end (11) to enhance the heat dissipation on the LED device (15),meaning that the present invention can be adjusted or modified dependingon the actual implementation. The serrated surface (141) is formedtransversely on the fin unit (14) for enhancing the surface area of thefin unit (14), and the fin unit (14) are configured to protrude from theheat dissipation plate (10). The design of the serrated surface (141)disperses the stress on the two ends of the heat dissipation plate (10)onto the fin unit (14) and enables the fin unit (14) to stretch easilyfor increasing the length of the fin unit (14) and preventing the finunit (14) from breaking during the manufacturing process. Thus, the heatdissipation plate (10) and the fin units (14) can be formed integrally,and the design of the serrated surface (141) can lower the productioncost and enhance the heat dissipation efficiency.

Referring to FIGS. 5 and 7, the serrated surface (141) on the fin unit(14) can be formed into the particular shapes such as triangle orsemi-circular according to the needs, and an upper portion and a lowerportion thereof can be formed aligned or misaligned to make thethickness of the fin unit (14) uniform or irregular. Referring to FIG. 6for another embodiment, the fin unit (14) can only have the lowerportion of the serrated surface (141) can be formed at an inner portionof the fin unit (14), which is perpendicular to the surface of the heatdissipation plate (10) for enhancing the heat dissipation. Referring toFIG. 8, a triangle-shaped space (142) is formed between the two nearbyfin units (14) on the second end (12) and makes the fin unit (14) aredivided to form a Y-shaped unit. Also referring to FIGS. 10 and 11, aperiphery of the heat dissipation plate (10) can be shaped into a squareor a cross-shaped unit. It is noted that all embodiments mentioned aboveare configured to lower the production cost and enhance the heatdissipation efficiency.

Having described the invention by the description and illustrationsabove, it should be understood that these are exemplary of the inventionand are not to be considered as limiting. Accordingly, the invention isnot to be considered as limited by the foregoing description, butincludes any equivalents.

What is claimed is:
 1. A heat dissipation apparatus comprising: a heatdissipation plate made of metal materials and having a first end and asecond end; a plurality of slots formed on the heat dissipationapparatus located between the first end and the second end; a fin unitlocated between the first and second ends of each slot, wherein aserrated surface is formed transversely on at least one side of the finunit for enhancing the ductility thereof, and the fin unit protrudesfrom the heat dissipation plate, so a surface area of the heatdissipation plate increases significantly by increasing length of thefin units and the serrated surface to enhance heat dissipationefficiency and lower production costs.
 2. The heat dissipation apparatusof claim 1, wherein the heat dissipation plate is circular, and thefirst end is located on a middle portion thereof, while the second endis located on an edge portions thereof, so the fin units are radiallysurrounded thereon.
 3. The heat dissipation apparatus of claim 1,wherein the fin unit protrudes from the heat dissipation plate and isshaped into a hollow triangle.
 4. The heat dissipation apparatus ofclaim 1, wherein the shape of the serrated surface of the fin unit istriangle.
 5. The heat dissipation apparatus of claim 1, wherein a lowerportion of serrated surface is perpendicular to the surface of the heatdissipation plate.
 6. The heat dissipation apparatus of claim 1, whereinthe shape of the serrated surface of the fin unit is semi-circular. 7.The heat dissipation apparatus of claim 1, wherein an upper portion anda lower portion of the serrated surface are aligned, so the thickness ofthe fin unit is uniform.
 8. The heat dissipation apparatus of claim 1,wherein an upper portion and a lower portion of the serrated surface aremisaligned, so the thickness of the fin unit varies.
 9. The heatdissipation apparatus of claim 1, wherein a triangle-shaped space isformed between two nearby fin units toward the second end and the finunits are divided to form a Y-shaped unit.